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怎么做带后台的网站,网站没排名要怎么做,培训机构招生方案范文,微信视频网站怎么做的好关键字#xff1a;hdfs fsck、block、locations 在HDFS中#xff0c;提供了fsck命令#xff0c;用于检查HDFS上文件和目录的健康状态、获取文件的block信息和位置信息等。 fsck命令必须由HDFS超级用户来执行#xff0c;普通用户无权限。 [hadoopdev ~]$ hdfs fsck Usage…关键字hdfs fsck、block、locations 在HDFS中提供了fsck命令用于检查HDFS上文件和目录的健康状态、获取文件的block信息和位置信息等。 fsck命令必须由HDFS超级用户来执行普通用户无权限。 [hadoopdev ~]$ hdfs fsck Usage: DFSck [-list-corruptfileblocks | [-move | -delete | -openforwrite] [-files [-blocks [-locations | -racks]]]] start checking from this path -move move corrupted files to /lostfound -delete delete corrupted files -files print out files being checked -openforwrite print out files opened for write -includeSnapshots include snapshot data if the given path indicates a snapshottable directory or there are snapshottable directories under it -list-corruptfileblocks print out list of missing blocks and files they belong to -blocks print out block report -locations print out locations for every block -racks print out network topology for data-node locations下面介绍每一个选项的含义及用法。  查看文件中损坏的块-list-corruptfileblocks [hadoopdev ~]$ hdfs fsck /hivedata/warehouse/liuxiaowen.db/lxw_product_names/ -list-corruptfileblocks The filesystem under path /hivedata/warehouse/liuxiaowen.db/lxw_product_names/ has 0 CORRUPT files 将损坏的文件移动至/lostfound目录-move [hadoopdev ~]$ hdfs fsck /hivedata/warehouse/liuxiaowen.db/lxw_product_names/part-00168 -move FSCK started by hadoop (auth:SIMPLE) from /172.16.212.17 for path /hivedata/warehouse/liuxiaowen.db/lxw_product_names/part-00168 at Thu Aug 13 09:36:35 CST 2015 .Status: HEALTHY Total size: 13497058 B Total dirs: 0 Total files: 1 Total symlinks: 0 Total blocks (validated): 1 (avg. block size 13497058 B) Minimally replicated blocks: 1 (100.0 %) Over-replicated blocks: 0 (0.0 %) Under-replicated blocks: 0 (0.0 %) Mis-replicated blocks: 0 (0.0 %) Default replication factor: 2 Average block replication: 2.0 Corrupt blocks: 0 Missing replicas: 0 (0.0 %) Number of data-nodes: 15 Number of racks: 1 FSCK ended at Thu Aug 13 09:36:35 CST 2015 in 1 millisecondsThe filesystem under path /hivedata/warehouse/liuxiaowen.db/lxw_product_names/part-00168 is HEALTHY 删除损坏的文件-delete [hadoopdev ~]$ hdfs fsck /hivedata/warehouse/liuxiaowen.db/lxw_product_names/part-00168 -delete FSCK started by hadoop (auth:SIMPLE) from /172.16.212.17 for path /hivedata/warehouse/liuxiaowen.db/lxw_product_names/part-00168 at Thu Aug 13 09:37:58 CST 2015 .Status: HEALTHY Total size: 13497058 B Total dirs: 0 Total files: 1 Total symlinks: 0 Total blocks (validated): 1 (avg. block size 13497058 B) Minimally replicated blocks: 1 (100.0 %) Over-replicated blocks: 0 (0.0 %) Under-replicated blocks: 0 (0.0 %) Mis-replicated blocks: 0 (0.0 %) Default replication factor: 2 Average block replication: 2.0 Corrupt blocks: 0 Missing replicas: 0 (0.0 %) Number of data-nodes: 15 Number of racks: 1 FSCK ended at Thu Aug 13 09:37:58 CST 2015 in 1 millisecondsThe filesystem under path /hivedata/warehouse/liuxiaowen.db/lxw_product_names/part-00168 is HEALTHY 检查并列出所有文件状态-files [hadoopdev ~]$ hdfs fsck /hivedata/warehouse/liuxiaowen.db/lxw_product_names/ -files FSCK started by hadoop (auth:SIMPLE) from /172.16.212.17 for path /hivedata/warehouse/liuxiaowen.db/lxw_product_names/ at Thu Aug 13 09:39:38 CST 2015 /hivedata/warehouse/liuxiaowen.db/lxw_product_names/ dir /hivedata/warehouse/liuxiaowen.db/lxw_product_names/_SUCCESS 0 bytes, 0 block(s): OK /hivedata/warehouse/liuxiaowen.db/lxw_product_names/part-00000 13583807 bytes, 1 block(s): OK /hivedata/warehouse/liuxiaowen.db/lxw_product_names/part-00001 13577427 bytes, 1 block(s): OK /hivedata/warehouse/liuxiaowen.db/lxw_product_names/part-00002 13588601 bytes, 1 block(s): OK /hivedata/warehouse/liuxiaowen.db/lxw_product_names/part-00003 13479213 bytes, 1 block(s): OK /hivedata/warehouse/liuxiaowen.db/lxw_product_names/part-00004 13497012 bytes, 1 block(s): OK /hivedata/warehouse/liuxiaowen.db/lxw_product_names/part-00005 13557451 bytes, 1 block(s): OK /hivedata/warehouse/liuxiaowen.db/lxw_product_names/part-00006 13580267 bytes, 1 block(s): OK /hivedata/warehouse/liuxiaowen.db/lxw_product_names/part-00007 13486035 bytes, 1 block(s): OK /hivedata/warehouse/liuxiaowen.db/lxw_product_names/part-00008 13481498 bytes, 1 block(s): OK ... 检查并打印正在被打开执行写操作的文件-openforwrite [hadoopdev ~]$ hdfs fsck /hivedata/warehouse/liuxiaowen.db/lxw_product_names/ -openforwrite FSCK started by hadoop (auth:SIMPLE) from /172.16.212.17 for path /hivedata/warehouse/liuxiaowen.db/lxw_product_names/ at Thu Aug 13 09:41:28 CST 2015 .................................................................................................... .................................................................................................... .Status: HEALTHY Total size: 2704782548 B Total dirs: 1 Total files: 201 Total symlinks: 0 Total blocks (validated): 200 (avg. block size 13523912 B) Minimally replicated blocks: 200 (100.0 %) Over-replicated blocks: 0 (0.0 %) Under-replicated blocks: 0 (0.0 %) Mis-replicated blocks: 0 (0.0 %) Default replication factor: 2 Average block replication: 2.0 Corrupt blocks: 0 Missing replicas: 0 (0.0 %) Number of data-nodes: 15 Number of racks: 1 FSCK ended at Thu Aug 13 09:41:28 CST 2015 in 10 millisecondsThe filesystem under path /hivedata/warehouse/liuxiaowen.db/lxw_product_names/ is HEALTHY 打印文件的Block报告-blocks 需要和-files一起使用。 [hadoopdev ~]$ hdfs fsck /logs/site/2015-08-08/lxw1234.log -files -blocks FSCK started by hadoop (auth:SIMPLE) from /172.16.212.17 for path /logs/site/2015-08-08/lxw1234.log at Thu Aug 13 09:45:59 CST 2015 /logs/site/2015-08-08/lxw1234.log 7408754725 bytes, 56 block(s): OK 0. BP-1034052771-172.16.212.130-1405595752491:blk_1075892982_2152381 len134217728 repl2 1. BP-1034052771-172.16.212.130-1405595752491:blk_1075892983_2152382 len134217728 repl2 2. BP-1034052771-172.16.212.130-1405595752491:blk_1075892984_2152383 len134217728 repl2 3. BP-1034052771-172.16.212.130-1405595752491:blk_1075892985_2152384 len134217728 repl2 4. BP-1034052771-172.16.212.130-1405595752491:blk_1075892997_2152396 len134217728 repl2 5. BP-1034052771-172.16.212.130-1405595752491:blk_1075892998_2152397 len134217728 repl2 6. BP-1034052771-172.16.212.130-1405595752491:blk_1075892999_2152398 len134217728 repl2 7. BP-1034052771-172.16.212.130-1405595752491:blk_1075893000_2152399 len134217728 repl2 8. BP-1034052771-172.16.212.130-1405595752491:blk_1075893001_2152400 len134217728 repl2 9. BP-1034052771-172.16.212.130-1405595752491:blk_1075893002_2152401 len134217728 repl2 10. BP-1034052771-172.16.212.130-1405595752491:blk_1075893003_2152402 len134217728 repl2 11. BP-1034052771-172.16.212.130-1405595752491:blk_1075893004_2152403 len134217728 repl2 12. BP-1034052771-172.16.212.130-1405595752491:blk_1075893005_2152404 len134217728 repl2 13. BP-1034052771-172.16.212.130-1405595752491:blk_1075893006_2152405 len134217728 repl2 14. BP-1034052771-172.16.212.130-1405595752491:blk_1075893007_2152406 len134217728 repl2 ... 其中/logs/site/2015-08-08/lxw1234.log 7408754725 bytes, 56 block(s): 表示文件的总大小和block数 0. BP-1034052771-172.16.212.130-1405595752491:blk_1075892982_2152381 len134217728 repl2 1. BP-1034052771-172.16.212.130-1405595752491:blk_1075892983_2152382 len134217728 repl2 2. BP-1034052771-172.16.212.130-1405595752491:blk_1075892984_2152383 len134217728 repl2 前面的0. 1. 2.代表该文件的block索引56的文件块就从0-55; BP-1034052771-172.16.212.130-1405595752491:blk_1075892982_2152381表示block id len134217728 表示该文件块大小 repl2 表示该文件块副本数 打印文件块的位置信息-locations 需要和-files -blocks一起使用。 [hadoopdev ~]$ hdfs fsck /logs/site/2015-08-08/lxw1234.log -files -blocks -locations FSCK started by hadoop (auth:SIMPLE) from /172.16.212.17 for path /logs/site/2015-08-08/lxw1234.log at Thu Aug 13 09:45:59 CST 2015 /logs/site/2015-08-08/lxw1234.log 7408754725 bytes, 56 block(s): OK 0. BP-1034052771-172.16.212.130-1405595752491:blk_1075892982_2152381 len134217728 repl2 [172.16.212.139:50010, 172.16.212.135:50010] 1. BP-1034052771-172.16.212.130-1405595752491:blk_1075892983_2152382 len134217728 repl2 [172.16.212.140:50010, 172.16.212.133:50010] 2. BP-1034052771-172.16.212.130-1405595752491:blk_1075892984_2152383 len134217728 repl2 [172.16.212.136:50010, 172.16.212.141:50010] 3. BP-1034052771-172.16.212.130-1405595752491:blk_1075892985_2152384 len134217728 repl2 [172.16.212.133:50010, 172.16.212.135:50010] 4. BP-1034052771-172.16.212.130-1405595752491:blk_1075892997_2152396 len134217728 repl2 [172.16.212.142:50010, 172.16.212.139:50010] 5. BP-1034052771-172.16.212.130-1405595752491:blk_1075892998_2152397 len134217728 repl2 [172.16.212.133:50010, 172.16.212.139:50010] 6. BP-1034052771-172.16.212.130-1405595752491:blk_1075892999_2152398 len134217728 repl2 [172.16.212.141:50010, 172.16.212.135:50010] 7. BP-1034052771-172.16.212.130-1405595752491:blk_1075893000_2152399 len134217728 repl2 [172.16.212.144:50010, 172.16.212.142:50010] 8. BP-1034052771-172.16.212.130-1405595752491:blk_1075893001_2152400 len134217728 repl2 [172.16.212.133:50010, 172.16.212.138:50010] 9. BP-1034052771-172.16.212.130-1405595752491:blk_1075893002_2152401 len134217728 repl2 [172.16.212.140:50010, 172.16.212.134:50010] ... 和打印出的文件块信息相比多了一个文件块的位置信息[172.16.212.139:50010, 172.16.212.135:50010] 打印文件块位置所在的机架信息-racks [hadoopdev ~]$ hdfs fsck /logs/site/2015-08-08/lxw1234.log -files -blocks -locations -racks FSCK started by hadoop (auth:SIMPLE) from /172.16.212.17 for path /logs/site/2015-08-08/lxw1234.log at Thu Aug 13 09:45:59 CST 2015 /logs/site/2015-08-08/lxw1234.log 7408754725 bytes, 56 block(s): OK 0. BP-1034052771-172.16.212.130-1405595752491:blk_1075892982_2152381 len134217728 repl2 [/default-rack/172.16.212.139:50010, /default-rack/172.16.212.135:50010] 1. BP-1034052771-172.16.212.130-1405595752491:blk_1075892983_2152382 len134217728 repl2 [/default-rack/172.16.212.140:50010, /default-rack/172.16.212.133:50010] 2. BP-1034052771-172.16.212.130-1405595752491:blk_1075892984_2152383 len134217728 repl2 [/default-rack/172.16.212.136:50010, /default-rack/172.16.212.141:50010] 3. BP-1034052771-172.16.212.130-1405595752491:blk_1075892985_2152384 len134217728 repl2 [/default-rack/172.16.212.133:50010, /default-rack/172.16.212.135:50010] 4. BP-1034052771-172.16.212.130-1405595752491:blk_1075892997_2152396 len134217728 repl2 [/default-rack/172.16.212.142:50010, /default-rack/172.16.212.139:50010] 5. BP-1034052771-172.16.212.130-1405595752491:blk_1075892998_2152397 len134217728 repl2 [/default-rack/172.16.212.133:50010, /default-rack/172.16.212.139:50010] ... 和前面打印出的信息相比多了机架信息[/default-rack/172.16.212.139:50010, /default-rack/172.16.212.135:50010] 转载自http://lxw1234.com/archives/2015/08/452.htm
http://wiki.neutronadmin.com/news/258960/

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